Rachel Bilson hopes she never remembers details of the car crash which left her in a coma for three days.

The American actress was involved in a head-on collision when she was 14. She was travelling down the Pacific Highway in California with friends when the accident occurred, and the wreck was so bad she had to be cut out of it. Rachel was badly injured, but has no memory of the event.

She is hoping it stays that way, as at the moment the incident doesn't affect her.

"I don't remember anything. I was in a coma for three days, but I don't remember the accident," she explained to the September issue of British magazine InStyle.

"I had a head injury, so I sort of blacked out. People said it would come back to me, but you know, I am hoping it never will."

The 28-year-old is very close to her mother Janice, who is a sex therapist and teacher. Rachel turns to her mother whenever something bad happens in her life, and says she can discuss anything with her.

The star believes it is her close-knit family which have helped her deal with her success. She is famed for her role as Summer Roberts in American show The O.C. - which also starred Mischa Barton - and is glad she didn't find fame too early as she thinks she may have gone off the rails.

"I do fall out of cars but not because I am drunk, but because I am clumsy," she said.

"I think girls who come to fame younger fall into all that [partying], but I did it before I became famous. I mean, I was 21 when The OC started, Mischa was 16. I can't imagine dealing with that kind of success at that age.

"My life may have been very different if I had started out that young."